Humana Inc. is a for-profit American health insurance company based in Louisville, Kentucky. As of 2014[update] Humana has had over 13 million customers in the U.S., [not in citation given] reported a 2013 revenue of US$41.3 billion, and has had 51,600 employees. In 2013, the company ranked 73 on the Fortune 500 list, which made it the highest ranked (by revenues) company based in Kentucky. It has been the third largest health insurance in the nation. Source: Wikipedia